D & H is a full-service Industrial Refrigeration, HVAC, and Mechanical Contracting Company

industrial refrigeration

Industrial Refrigeration

Our Chicago commercial & industrial refrigeration experts provide a full range of building refrigeration unit control, installation, and maintenance services including system designs, repairs, replacements and upgrades for ammonia, freon, rack & supermarket systems, and more.

commercial hvac services

Commercial HVAC Services

D & H is a full range commercial HVAC team in Chicago, including design & installation, preventive maintenance, building design, air conditioning and heating systems, equipment retrofits and replacements including chiller services, temperature & humidity controls, VRF systems, air handling equipment, and energy management.

food process piping services

Food & Process Piping Services

Our mechanical experts and Chicago welders undergo rigorous union training and union testing to pass the United Association’s x-ray welding tests. Welding low / high carbon steel, austenitic stainless steels, aluminums, and dissimilar materials are some examples our welders can x-ray certify weld. Some of our process piping services include steam piping, ammonia piping, and layout piping.

why choose dh banner
why choose dh banner

Why Choose D&H

We have the knowledge, experience, and ability to deliver a service to exceed your mechanical contracting expectations.

System Design

We ensure that every aspect of system design has been thoroughly calculated and engineered to perform at maximum energy efficiency, reliability and within your timeframe & budget.

Expert Engineering

We work closely with building owners & engineers on a personal level enabling us to provide the most cost-effective solutions and to ensure we exceed the goals and expectations of our clients.

Professional Installation

We started serving our industry in 1994 and have experienced significant growth with our clients over the years. Our design, build, engineering, construction, and service team is the complete package.

Preventative Maintenance

We do not believe in a “templated” approach when creating preventive maintenance programs. Each mechanical system is unique and we tailor specifically to our clients’ needs. We refer to our customized maintenance programs as the “MechCare” program.

24/7 Emergency Service

With 24/7/365 service, our immediate response remains the goal of D & H Refrigeration. Have peace of mind knowing that we stand ready around-the-clock to respond to unexpected emergencies.

Recent Mechanical Projects

60k sqft freezer install
60k sqft freezer install

60,000 Sqft Freezer

Ammonia condenser replacement
Ammonia condenser replacement

Ammonia Condenser

Maximum Energy Efficiency And A Cost-effective Solution Can Start Now.

Let’s talk about your commercial or industrial system design needs. Let’s build a plan to get you there.